Name: Kayla Day
Country: USA
Birthdate: 28.09.99, 24 years
WTA ranking: 84
TOP ranking's position: 84 (22.04.24, 84700 points)
Points: 847
Prize money: 860655 $
Matches total: 421
Win: 245
%: 58.19 %
Country: USA
Birthdate: 28.09.99, 24 years
WTA ranking: 84
TOP ranking's position: 84 (22.04.24, 84700 points)
Points: 847
Prize money: 860655 $
Matches total: 421
Win: 245
%: 58.19 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 9/12 | 2/9 | 7/3 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2023 | 41/25 | 22/15 | 18/7 | 0/2 | 0/0 | 1/1 | 0/0 |
| 2022 | 41/22 | 26/15 | 13/6 | 2/1 | 0/0 | 0/0 | 0/0 |
| 2021 | 18/12 | 12/7 | 6/5 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 20/11 | 6/5 | 14/4 | 0/2 | 0/0 | 0/0 | 0/0 |
| 2019 | 18/20 | 11/14 | 7/6 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 11/23 | 9/14 | 1/8 | 1/1 | 0/0 | 0/0 | 0/0 |
| 2017 | 29/24 | 12/13 | 10/6 | 4/3 | 0/0 | 3/2 | 0/0 |
| 2016 | 46/18 | 26/9 | 16/8 | 0/0 | 0/0 | 4/1 | 0/0 |
| 2015 | 11/7 | 7/4 | 3/2 | 0/0 | 0/0 | 1/1 | 0/0 |
| 2014 | 1/2 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 245/176 | 134/107 | 95/55 | 7/9 | 0/0 | 9/5 | 0/0 |
| perc. % | 58.19 % | 55.6 % | 63.33 % | 43.75 % | 0 % | 64.29 % | 0 % |
Kayla Day / scheduled / last
| 26.04.24 13:30 | 1/4 | Kayla Day  | Varvara Lepchenko | 7-66, 0-1 LIVE | match details |  W75 Charlottesville | Clay |
Kayla Day form / year 2022 / surface: Clay
Kayla Day / year 2022 / surface: Clay
| 22.05.22 | fin | Kayla Day | Ana Sofia Sanchez | 6-1, 6-1 |  | match details | W25 Naples | Clay |
| 21.05.22 | 1/2 | Kayla Day | Elizabeth Halbauer | 4-6, 6-2, 6-1 | | match details | ||
| 20.05.22 | 1/4 | Kayla Day | Alexis Blokhina | 6-1, 6-2 | | match details | ||
| 19.05.22 | 2nd round | Kayla Day | Chiara Scholl | 6-3, 6-1 | | match details | ||
| 18.05.22 | 1st round | Kayla Day | Shilin Xu | 6-4, 6-1 | | match details | ||
| 06.05.22 | 1/4 | Xiyu Wang | Kayla Day | 6-1, 7-5 |  | match details | W100 Bonita | Clay |
| 05.05.22 | 2nd round | Kayla Day | Alycia Parks | 6-1, 7-65 | | match details | ||
| 04.05.22 | 1st round | Kayla Day | Mirjam Bjorklund | 6-2, 6-2 | | match details | ||
| 03.05.22 | qual. | Kayla Day | Erica Oosterhout | 7-64, 6-3 | | match details | ||
| 02.05.22 | q 1 | Kayla Day | Victoria Osuigwe | 6-1, 6-3 | | match details | ||
| 25.04.22 | q 1 | Alexa Graham | Kayla Day | 6-2, 3-1, Kayla Day - retired | | match details | W100 Charleston | Clay |
| 21.04.22 | 2nd round | Robin Anderson | Kayla Day | 6-4, 1-6, 7-64 | | match details | W60 Charlottesville | Clay |
| 20.04.22 | 1st round | Kayla Day | Olga Govortsova | 6-3, 6-2 | | match details | ||
| 19.04.22 | qual. | Kayla Day | Anastasia Nefedova | 6-2, 6-0 | | match details | ||
| 18.04.22 | q 1 | Kayla Day | Anna Sinclair Rogers | 6-3, 6-3 | | match details | ||
| 12.04.22 | qual. | Elvina Kalieva | Kayla Day | 7-62, 6-2 | | match details | W100 Palm | Clay |
| 11.04.22 | q 1 | Kayla Day | Chiara Scholl | 6-1, 6-3 | | match details | ||
| 30.03.22 | 1st round | Ankita Raina | Kayla Day | 6-2, 6-3 | | match details |  W60 Canberra | Clay |
| 22.03.22 | 1st round | Moyuka Uchijima | Kayla Day | 6-3, 7-5 | | match details | W60 Canberra | Clay |